
12V Guru – Understanding wiring faults in your caravan
12V Guru Says.. When it comes to electrical systems in RVs, understanding the intricacies of DC (Direct Current)
We regularly are asked by our readers as to what is the best practise and recommended storage for batteries in caravans, so this month we’ve decided we’re going to put together our top tips for not only the safe AGM battery storage but good maintenance of your batteries.
There are two main types of battery chemistries that are being used in RV’s across Australia. The first is the tried and tested lead-acid battery which everybody would be familiar with and the second is the cutting-edge technology that lithium brings to our adventures. Ensuring that you have properly secured and maintained your batteries will ensure many years of great use and also protect probably the second most expensive replacement item in the caravan after a set of 4 new tyres.
This article deals with the storage of Lead Acid batteries. As most are aware, there are multiple versions of the traditional lead-acid battery which include Gel, Flooded, AGM etc, however, from a storage perspective they all have similar requirements. The most common battery used in the RV market is the AGM as it requires less maintenance and less chance of venting noxious and dangerous gases. AGM does absorb the majority of the gases created internally in an AGM battery however if there is an excessive build-up due to incorrect charging. These batteries will all “vent” when there is a build-up of gas pressure inside and whilst to the naked eye it may not be obvious, there will be a small vent(s) built into the top of the plastic case (or sometimes the top of the side wall) that allows for excess gas to pass through and reduce the internal pressure of the battery. Without this vent, the battery could swell within its case and cause even more damage. This can be seen sometimes when a 2V cell within the battery has been damaged and it continues to overcharge, and the gases can’t vent adequately to protect the battery integrity.
Similar to how you would look out for the tyres on your caravan to ensure you maximised the investment and ensured the safety of your caravan, maintaining your battery properly will ensure not only you and your family’s safety but the longevity of such a critical component to enjoying your next trip.
Safe travels,
12V Guru
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12V Guru Says.. When it comes to electrical systems in RVs, understanding the intricacies of DC (Direct Current)
Hi, I am doing a rebuild of a mid-90’s 19’ off road caravan and I want to start
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1 thought on “12V Guru – AGM Battery Storage”
It’s great that you are sharing useful information. I enjoy reading your blog.
David, author, and owner of the blog https://agmbatteryguide.com/